RESUMO
Background and aims Chemoradiotherapy for head and neck cancer (HNC) with/without laryngectomy commonly causes dysphagia. Pharyngoesophageal junction (PEJ) stricturing is an important contributor. We aimed to validate a functional lumen imaging probe (the EndoFLIP system) as a tool for quantitating pretreatment PEJ distensibility and treatment-related changes in HNC survivors with dysphagia and to evaluate the diagnostic accuracy of EndoFLIP-derived distensibility in detecting PEJ strictures. Methods We studied 34 consecutive HNC survivors with long-term (>â12 months) dysphagia who underwent endoscopic dilation for suspected strictures. Twenty non-dysphagic patients undergoing routine endoscopy served as controls. PEJ distensibility was measured at endoscopy with the EndoFLIP system pre- and post-dilation. PEJ stricture was defined as the presence of a mucosal tear post-dilation. Results PEJ stricture was confirmed in 22/34 HNC patients (65â%). During distension up to 60âmmHg, the mean EndoFLIP-derived narrowest cross-sectional area (nCSA) in HNC patients with strictures, without strictures, and in controls were 58âmm2 (95â% confidence interval [CI] 22 to 118), 195âmm2 (95â%CI 129 to 334), and 227âmm2 (95â%CI 168 to 316), respectively. A cutoff of 114âmm2 for the nCSA at the PEJ had perfect diagnostic accuracy in detecting strictures (area under the receiver operating characteristic curveâ=â1). In patients with strictures, a single session of dilation increased the nCSA by 29âmm2 (95â%CI 20 to 37; Pâ<â0.001). In patients with no strictures, dilation caused no change in the nCSA (mean difference 13âmm2 [95â%CI -4 to 30]; Pâ=â0.13). Conclusions EndoFLIP is a highly accurate technique for the detection of PEJ strictures. EndoFLIP may complement conventional diagnostic tools in the detection of pharyngeal outflow obstruction.
Assuntos
Transtornos de Deglutição/etiologia , Estenose Esofágica/diagnóstico , Neoplasias de Cabeça e Pescoço/terapia , Faringe/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Área Sob a Curva , Quimiorradioterapia/efeitos adversos , Constrição Patológica/diagnóstico , Constrição Patológica/etiologia , Constrição Patológica/terapia , Transtornos de Deglutição/terapia , Dilatação , Estenose Esofágica/etiologia , Estenose Esofágica/terapia , Feminino , Humanos , Laringectomia/efeitos adversos , Masculino , Pessoa de Meia-Idade , Pletismografia de Impedância , Curva ROC , Radioterapia Adjuvante/efeitos adversos , Adulto JovemRESUMO
The role of endoscopic ultrasound (EUS) in the diagnosis of biliary obstruction is well established, and emerging evidence suggests it may also play a therapeutic role. Differentiating between benign and malignant causes of biliary obstruction can be challenging, but EUS is a crucial tool in the armamentarium of the physician. Evolving technologies such as elastography and contrast enhancement may further supplement the diagnostic abilities of EUS. Therapeutic applications of EUS are evolving rapidly, and EUS-guided cholangiography may aid biliary decompression when endoscopic retrograde cholangiopancreatography (ERCP) has failed or is not possible.
Assuntos
Doenças Biliares/diagnóstico por imagem , Sistema Biliar/diagnóstico por imagem , Colestase/diagnóstico por imagem , Endossonografia/métodos , Doenças Biliares/diagnóstico , Colestase/etiologia , Diagnóstico Diferencial , HumanosRESUMO
A man injured in the tsunami of Dec 26, 2004, returned to Sydney for management of his soft-tissue injuries. Despite broad-spectrum antibiotics, surgical wound debridement, and vigilant wound care, his condition worsened. Muscle and fat necrosis developed in a previously debrided thigh wound, and necrotising lesions arose from previous abrasions. Histological analysis showed mucormycosis in three non-contiguous sites, and Apophysomyces elegans was isolated from excised wound tissue. Wound infections, both bacterial and fungal, will undoubtedly add to the morbidity and mortality already recorded in tsunami-affected areas. Other cases [correction] of cutaneous mucormycosis might develop in survivors, but this disease can be difficult to diagnose and even harder to treat, particularly in those remaining in affected regions.